Home / 823,520.80-1,235,281.20-815,647.60

Finding the Fourth Proportional to 823,520.80, 1,235,281.20 and 815,647.60

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Solution

The fourth proportional to 823,520.80, 1,235,281.20 and 815,647.60 is: 1,223,471.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    823,520.80 : 1,235,281.20 = 815,647.60 : x
  2. Step 2: Convert to fraction form
    823,520.80/1,235,281.20 = 815,647.60/x
  3. Step 3: Cross multiply
    823,520.80x = 1,235,281.20 × 815,647.60
  4. Step 4: Simplify right side
    823,520.80x = 1,007,554,146,105.12
  5. Step 5: Solve for x
    x = 1,007,554,146,105.12/823,520.80
  6. Step 6: Final answer
    x = 1,223,471.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.